jackpot_dlmnBeen reading this board for a while, so here is what I look at before signing up anywhere. After trying maybe a dozen sites I stopped trusting the big banners.
I always start with licensing: find the licence number and look it up, and whether they actually accept players from your country. Then payments: crypto is a plus but not a must, and there should be no weird fees on cashouts.
Bonuses are the tricky part. Read the wagering and the max bet rule, and the bonus usually expires in a week or two. A useful overview with bonus rules, app info and payment methods is worth a read here [url=https://www.codesaya.com/u/csa12cb/]Slott Casino[/url] before you deposit anything.
I play almost only on my phone, so I check how the lobby works on a small screen. Support matters too: if they answer in a couple of minutes that is a good sign.
Anyway, that is my routine. Only play with money you can afford to lose.